What is the cheapest airline that flies from Louisville Intl to Sydney Kingsford Smith?

Delta and United Airlines are the most popular carriers operating from Louisville Intl to Sydney Kingsford Smith

What airlines fly to Sydney?

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to Sydney from Louisville according to our data. United Airlines is the first choice among our users, with 52% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 5 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

Prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

There are 2 operators available for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport as of December 2025.

How old do you have to be to fly from Louisville Intl Airport to Sydney Kingsford Smith Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to Sydney Kingsford Smith Airport.

What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$553 Cheap Flights from Louisville to Sydney in 2025/26

Q: What is the typical price of a round-trip flight between Louisville and Sydney?

Prices are currently low for flights on this route. Typical prices usually range from $1,263 to $2,371. The lowest price recently found on this route was $1,163.

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Find the cheapest flights from Louisville to Sydney

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3:30 pm - 7:00 am

SDF

SYD

24h 30m1 stop

11:50 am - 7:51 pm

SYD

SDF

23h 01m1 stop

$1,163United Airlines

Mon, Mar 16 - Mon, Mar 23

9:00 am - 7:00 am

SDF

SYD

31h 00m2 stops

11:50 am - 7:51 pm

SYD

SDF

23h 01m1 stop

$1,168United Airlines

Mon, Mar 16 - Mon, Mar 23

8:29 am - 7:00 am

SDF

SYD

30h 31m2 stops

11:50 am - 7:56 pm

SYD

SDF

24h 06m1 stop

$1,268United Airlines

Sat, Jan 31 - Sat, Feb 7

3:30 pm - 7:00 am

SDF

SYD

23h 30m1 stop

11:50 am - 7:54 pm

SYD

SDF

24h 04m1 stop

$1,271United Airlines

Sat, Feb 7 - Wed, Feb 11

3:30 pm - 7:00 am

SDF

SYD

23h 30m1 stop

11:20 am - 10:24 pm

SYD

SDF

27h 04m2 stops

$1,276United Airlines

Sat, Feb 7 - Wed, Feb 11

3:20 pm - 7:00 am

SDF

SYD

25h 40m2 stops

9:30 am - 4:49 pm

SYD

SDF

45h 19m2 stops

$1,336United Airlines

Tue, Jun 9 - Wed, Jun 17

3:30 pm - 9:05 am

SDF

SYD

26h 35m2 stops

10:20 am - 10:32 pm

SYD

SDF

26h 12m2 stops

$1,368United Airlines

Thu, Mar 19 - Sun, Apr 5

3:30 pm - 7:00 am

SDF

SYD

23h 30m1 stop

11:50 am - 7:54 pm

SYD

SDF

24h 04m1 stop

$1,376United Airlines

Mon, Jan 19 - Fri, Jan 23

3:22 pm - 7:00 am

SDF

SYD

47h 38m2 stops

2:00 pm - 8:28 pm

SYD

SDF

22h 28m2 stops

$1,770United Airlines

Wed, Jan 14 - Wed, Jan 21

6:24 pm - 6:55 am

SDF

SYD

21h 31m1 stop

12:00 pm - 5:37 pm

SYD

SDF

19h 37m1 stop

$1,829Qantas Airways

Thu, Mar 19 - Sun, Apr 5

United Airlines flights from Louisville to Sydney

Our best United Airlines deals on Louisville to Sydney flight tickets

United Airlines

Mar 16

SDF3:30 pmLouisville Intl

24h 30m

1 stop

SYD7:00 amSydney Kingsford Smith

Mar 23

SYD11:50 amSydney Kingsford Smith

23h 01m

1 stop

SDF7:51 pmLouisville Intl

$1,163

Find similar

United Airlines

Mar 16

SDF9:00 amLouisville Intl

31h 00m

2 stops

SYD7:00 amSydney Kingsford Smith

Mar 23

SYD11:50 amSydney Kingsford Smith

23h 01m

1 stop

SDF7:51 pmLouisville Intl

$1,168

Find similar

United Airlines

Jan 31

SDF8:29 amLouisville Intl

30h 31m

2 stops

SYD7:00 amSydney Kingsford Smith

Feb 7

SYD11:50 amSydney Kingsford Smith

24h 06m

1 stop

SDF7:56 pmLouisville Intl

$1,268

Find similar

Air Canada flights from Louisville to Sydney

Our best Air Canada deals on Louisville to Sydney flight tickets

Air Canada

Feb 7

SDF8:29 amLouisville Intl

33h 06m

3 stops

SYD9:35 amSydney Kingsford Smith

Feb 11

SYD11:20 amSydney Kingsford Smith

25h 08m

2 stops

SDF8:28 pmLouisville Intl

$1,891

Find similar

Air Canada

Feb 7

SDF11:10 amLouisville Intl

30h 25m

3 stops

SYD9:35 amSydney Kingsford Smith

Feb 11

SYD11:20 amSydney Kingsford Smith

27h 10m

2 stops

SDF10:30 pmLouisville Intl

$1,899

Find similar

Air Canada

Feb 7

SDF11:10 amLouisville Intl

30h 25m

3 stops

SYD9:35 amSydney Kingsford Smith

Feb 11

SYD11:20 amSydney Kingsford Smith

25h 08m

2 stops

SDF8:28 pmLouisville Intl

$1,962

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Mon 3/16

3:30 pm-7:00 am

1 stop24h 30m

Sydney Kingsford Smith

Mon 3/23

11:50 am-7:51 pm

1 stop23h 01m

$1,163

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Mon 3/16

9:00 am-7:00 am

2 stops31h 00m

Sydney Kingsford Smith

Mon 3/23

11:50 am-7:51 pm

1 stop23h 01m

$1,168

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sat 1/31

8:29 am-7:00 am

2 stops30h 31m

Sydney Kingsford Smith

Sat 2/7

11:50 am-7:56 pm

1 stop24h 06m

$1,268

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sat 2/7

3:30 pm-7:00 am

1 stop23h 30m

Sydney Kingsford Smith

Wed 2/11

11:50 am-7:54 pm

1 stop24h 04m

$1,271

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sat 2/7

3:30 pm-7:00 am

1 stop23h 30m

Sydney Kingsford Smith

Wed 2/11

11:20 am-10:24 pm

2 stops27h 04m

$1,276

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Tue 6/9

3:20 pm-7:00 am

2 stops25h 40m

Sydney Kingsford Smith

Wed 6/17

9:30 am-4:49 pm

2 stops45h 19m

$1,336

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 3/19

3:30 pm-9:05 am

2 stops26h 35m

Sydney Kingsford Smith

Sun 4/5

10:20 am-10:32 pm

2 stops26h 12m

$1,368

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Mon 1/19

3:30 pm-7:00 am

1 stop23h 30m

Sydney Kingsford Smith

Fri 1/23

11:50 am-7:54 pm

1 stop24h 04m

$1,376

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Wed 1/14

3:22 pm-7:00 am

2 stops47h 38m

Sydney Kingsford Smith

Wed 1/21

2:00 pm-8:28 pm

2 stops22h 28m

$1,770

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 3/19

6:24 pm-6:55 am

1 stop21h 31m

Sydney Kingsford Smith

Sun 4/5

12:00 pm-5:37 pm

1 stop19h 37m

$1,829

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first

How to get the cheapest flight ticket from Louisville to Sydney

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the typical price of a round-trip flight between Louisville and Sydney?

What is the cheapest month to fly to Sydney?

In general, November is the cheapest month to fly from Louisville to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,142. If you are unable to visit Sydney during the month of November, then departing from Louisville during the month March is also very affordable. Most momondo users find prices during this month for around $1,199.

What is the cheapest day to depart on your flight to Sydney?

The cheapest day to depart from Louisville to Sydney is on a Wednesday when prices can be found for as low as $1,260. The most expensive day to fly to Sydney is Tuesday, with ticket prices averaging around $2,104.

What is the cheapest time of day to depart on your flight to Sydney?

According to our data, the cheapest time of day to fly to Sydney is at noon. momondo users have found flights departing from Louisville to Sydney at noon for as low as $1,343. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Sydney are more costly in the morning, with an average ticket price of $1,798. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Can stopping save me money on Louisville to Sydney flights?

You could potentially save up to 5% on your flight if you consider stops on a Louisville to Sydney flight.

When to book flights from Louisville to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Louisville to Sydney according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Louisville to Sydney (SDF to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Louisville to Sydney

Fastest flight time	23h 30m
Direct flights	None

The fastest flight from Louisville to Sydney takes 23h 30m

There are no direct flights from Louisville to Sydney. There are no popular flight routes from Louisville to Sydney.

Search flight deals

How far is Louisville Intl to Sydney Kingsford Smith by plane?
A flight from Louisville Intl to Sydney Kingsford Smith will travel around 9284.6 mi. A reasonable flight in good conditions will take 23h 30m.
When did momondo last update prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?
Prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?
There are 2 operators available for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport as of December 2025.
How old do you have to be to fly from Louisville Intl Airport to Sydney Kingsford Smith Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to Sydney Kingsford Smith Airport.
What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?
The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Louisville to Sydney?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Louisville to Sydney is United Airlines (73% of total bookings). The next most popular airline is Delta (27%).

Best airlines flying from Louisville to Sydney

Compare and see reviews for airlines that fly from Louisville to Sydney with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $930	Free Cancellation	Rating 7.4 9,092 reviews		Search United Airlines flights
Delta	PriceFrom $979	Free Cancellation	Rating 7.9 8,005 reviews		Search Delta flights

Parramatta

Bondi Beach

Katoomba

Wollongong

Randwick

Coogee

Manly

Penrith

Cronulla

Lithgow

Leura

Charlestown

Terrigal

Swansea

Why use momondo?

Why should I use momondo to find a flight deal from Louisville to Sydney?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Louisville to Sydney for you.

Can I find flights from Louisville to Sydney with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Louisville to Sydney flights to just show those with flexible booking policies.

How can momondo help me find flights from Louisville to Sydney?

momondo provides multiple filters to help you find the best flight to Sydney from Louisville. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Louisville to Sydney right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Louisville to Sydney now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sydney and let you know when they change.

An easier way to manage your Sydney trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Flights to Melbournefrom $674

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Cheap flights from Louisville to Sydney from $553

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Louisville to Sydney departing on 5/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Find the cheapest flights from Louisville to Sydney

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United Airlines flights from Louisville to Sydney

Our best United Airlines deals on Louisville to Sydney flight tickets

Air Canada flights from Louisville to Sydney

Our best Air Canada deals on Louisville to Sydney flight tickets

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How to get the cheapest flight ticket from Louisville to Sydney

What is the typical price of a round-trip flight between Louisville and Sydney?

What is the cheapest month to fly to Sydney?

What is the cheapest day to depart on your flight to Sydney?

The cheapest day to depart from Louisville to Sydney is on a Wednesday when prices can be found for as low as $1,260. The most expensive day to fly to Sydney is Tuesday, with ticket prices averaging around $2,104.

What is the cheapest time of day to depart on your flight to Sydney?

Can stopping save me money on Louisville to Sydney flights?

You could potentially save up to 5% on your flight if you consider stops on a Louisville to Sydney flight.

What is the cheapest airline that flies from Louisville Intl to Sydney Kingsford Smith?

Delta and United Airlines are the most popular carriers operating from Louisville Intl to Sydney Kingsford Smith

What airlines fly to Sydney?

When to book flights from Louisville to Sydney

Cheap Louisville to Sydney (SDF to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Louisville to Sydney

Fastest flight time

Direct flights

How far is Louisville Intl to Sydney Kingsford Smith by plane?

When did momondo last update prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

How many operators does momondo search for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

How old do you have to be to fly from Louisville Intl Airport to Sydney Kingsford Smith Airport?

What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

What is the most popular airline from Louisville to Sydney?

Best airlines flying from Louisville to Sydney

Compare and see reviews for airlines that fly from Louisville to Sydney with momondo

Traveling to a place near Sydney?

Why use momondo?

Why should I use momondo to find a flight deal from Louisville to Sydney?

Can I find flights from Louisville to Sydney with flexible booking policies on momondo?

How can momondo help me find flights from Louisville to Sydney?

I’m not ready to book a flight from Louisville to Sydney right now. Can momondo alert me if prices change?

An easier way to manage your Sydney trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Australia

Airports servicing New South Wales